Click a tool to expand it. Use the sidebar to jump straight to what you need.
Encode or decode Base64 text — look for strings ending in = as a clue
Shift every letter by a fixed number — Julius Caesar's classic trick
Multi-key cipher — each letter is shifted by a different amount based on a keyword
Extract hidden metadata from photos — GPS location, camera model, date taken
See the raw bytes of any file and identify file type signatures (magic numbers)
Find and pull out files hidden inside other files — ZIPs inside images, etc.